Configuring Simple Network Management Protocol

SNMP Agent Functions

Operation

Description

set-request

Stores a value in a specific variable.

trap

An unsolicited message sent by an SNMP agent to an SNMP manager when some event

 

has occurred.

2 With this operation, an SNMP manager does not need to know the exact variable name. A sequential search is performed to find the needed variable from within a table.

3 The get-bulk command only works with SNMPv2 or later.

SNMP Agent Functions

The SNMP agent responds to SNMP manager requests as follows:

•Get a MIB variable—The SNMP agent begins this function in response to a request from the NMS. The agent retrieves the value of the requested MIB variable and responds to the NMS with that value.

•Set a MIB variable—The SNMP agent begins this function in response to a message from the NMS. The SNMP agent changes the value of the MIB variable to the value requested by the NMS.

The SNMP agent also sends unsolicited trap messages to notify an NMS that a significant event has occurred on the agent. Examples of trap conditions include, but are not limited to, when a port or module goes up or down, when spanning-tree topology changes occur, and when authentication failures occur.

SNMP Community Strings

SNMP community strings authenticate access to MIB objects and function as embedded passwords. In order for the NMS to access the switch, the community string definitions on the NMS must match at least one of the three community string definitions on the switch.

A community string can have one of the following attributes:

•Read-only (RO)—Gives all objects in the MIB except the community strings read access to authorized management stations, but does not allow write access.

•Read-write (RW)—Gives all objects in the MIB read and write access to authorized management stations, but does not allow access to the community strings.

•When a cluster is created, the command switch manages the exchange of messages among member switches and the SNMP application. The Network Assistant software appends the member switch number (@esN, where N is the switch number) to the first configured RW and RO community strings on the command switch and propagates them to the member switches.

SNMP MIB Variables Access

An example of an NMS is the Cisco Prime Infrastructure network management software. Cisco Prime Infrastructure 2.0 software uses the switch MIB variables to set device variables and to poll devices on the network for specific information. The results of a poll can be displayed as a graph and analyzed to troubleshoot

Catalyst 2960-X Switch Network Management Configuration Guide, Cisco IOS Release 15.0(2)EX

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Cisco Systems WSC2960X24TSLL, WSC2960X24TDL manual Snmp Agent Functions, Snmp Community Strings, Snmp MIB Variables Access
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WSC2960X24TSL, C2960XSTACK, WSC2960X24PDL, WSC2960X24TSLL, WSC2960X24PSL specifications

Cisco Systems has long been a leader in networking technology, and its range of switching products exemplifies its commitment to high performance and reliability. Among its popular offerings are the Catalyst 2960-X and 2960-XR series switches, including models like WSC2960X48TSL, WSC2960XR48FPDI, WSC2960XR24TDI, and WSC2960XR48LPDI. These switches are designed to deliver efficient Layer 2 and Layer 3 capabilities, making them ideal for enterprise and small to medium-sized business networks.

The WSC2960X48TSL model boasts 48 Ethernet ports, providing ample connectivity for various devices. It supports Power over Ethernet (PoE), making it suitable for powering IP cameras, wireless access points, and VoIP phones. The switch also features Cisco’s Smart Operations technology, which simplifies network management and enhances user experience through automated features such as Cisco Auto Smartports and Auto QoS.

Turning to the WSC2960XR48FPDI, this version also features 48 ports but with enhanced redundancy and power capabilities, making it suitable for critical applications where uptime is paramount. This switch offers dual power supply options, ensuring that even in the event of a power failure, network operations continue seamlessly. Its Flexible NetFlow feature enables enhanced visibility and monitoring of traffic, allowing businesses to optimize their bandwidth usage and troubleshoot issues more efficiently.

The WSC2960XR24TDI model, with its 24 ports, is perfectly designed for networks with fewer devices yet still demands robust performance. It also includes advanced security features, such as IEEE 802.1X port-based authentication, enhancing the protection of sensitive data and communications within the network.

Lastly, the WSC2960XR48LPDI model is tailored for environments that require high availability and robust performance, featuring 48 ports along with Layer 3 static routing capabilities. With its support for IPv6 and advanced QoS features, this switch is prepared for the future of networking, accommodating the increasing demand for bandwidth and reliable connectivity.

All these switches utilize Cisco IOS software, providing a familiar interface for network administrators. They also incorporate advanced troubleshooting tools, like Cisco Prime, which facilitate effective network management. Collectively, the WSC2960 series switches represent a comprehensive solution for businesses seeking dependable, scalable, and manageable networking options. With their combination of performance, features, and reliability, these Cisco switches are essential for meeting the demands of modern networking.
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